Unambiguous Optimization of Multicomponent Separation
The composition of multi-component materials is proved to be unambiguously determined by the composition uncertainty parameter (composition entropy).At the same time, every component, depending on its content, introduces a certain value into this parameter.Quality criterion of multi-component separation is determined by the total change of this parameter for all products obtained as a result of the separation process. This parameter can unambiguously estimate both multi-product separation and complicated schemes of modem beneficiation plants. It can be used to estimate binary mixtures separation, too.During the optimization of multi-product separation, another problem arises, which is not peculiar to binary mixtures. In this case, the total efficacy depends on the order of separation boundaries,as well.In the present paper, a specific example of initial product separation into seven products by six boundaries is investigated. It is clear that with respect to a single boundary, two products only can be obtained.In this case, the separation optimum is shown to correspond to the separation of boundary-class particles equally into both products.We have also established that from the point of view of entropy, the maximal possible separation efficacy corresponds to equiprobable composition of the initial mixture, i.e., the fine product quantity in the material to be separated is equal to that of the coarse product.Three groups of experiments were carded out. In the first group, the boundaries were consecutively specified from the finest to the coarsest one. In the second group, the boundaries were set vice-versa, i.e., consecutively from the coarsest to the finest one.In the third group, no sequence was observed. At every separation stage, a boundary was specified in such a way that the separated material composition was as close as possible to equiprobable one relative to this boundary.Total efficacy was different in all the three cases. In third group of experiments, its value is the highest, which confirms the advanced supposition.The obtained results are phenomenological, they can be applied to any processes of solid, liquid and gaseous materials separation.
Unambiguous optimization Multi-component materials
E. Barsky M. Barsky
Jerusalem College of Engineering, Jerusalem, Israel The Institute for Applied Research Ben-Gurion University of the Negev, Beer-Sheva, Israel
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2458-2467
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）